Yosuke left his brilliant career in the financial industry and moved to an insurance company. His goal was to work under the top sales manager, Amano. He thought that by working under Tsubaki, who was engaged in obscene sales practices that were borderline illegal, he would also be able to enjoy her benefits... However, Tsubaki knew all about his plans and gave him a harsh and pleasurable baptism as soon as he joined the company. Tsubaki was Kokoro to breaking the sweet and bitter new employee training, but Yosuke persevered.